Your first visual on screen

Ten minutes, nothing to write.

1Get a visual

Nothing is playing yet. Press + add layer, then library, and pick one; or, from the library page, download a zip, unzip it, keep the folder somewhere you will find again. Your own GLSL or p5 sketch works the same way; what Operatour plays says the shape a folder needs.

2Add it

Drag the folder onto the Operatour window, or press ⌘O and pick it. It starts at once, at the top of the stack.

3Mix it

Click a layer's card to select it. Opacity is the amber bar: drag it. Blend is the dropdown: normal, add, screen, multiply. ON at the top right switches it off and on. Two layers and one blend mode is already a show; try add with the top layer at about half.

4Give it music

Play something and make sure Operatour can hear it; the fastest way is the built-in microphone with your speakers up. Every library visual listens to the room, so it starts moving now. Better routes: play music into it.

5Play its controls

The selected visual's controls are on the right: colour, speed, how hard it reacts. Drag them.

6Put it on the wall

With a second display connected, the picture is already there. Press f for fullscreen on one screen; Esc brings it back.

7Keep it

⌘S saves a .slko file. Reopening puts everything back as you left it.